高速公路上跨斜桥阴影效应的调控方法研究  

Research on the Control Method of Shadow Effect of the Bridge Spanning on the Expressway

作　　者：李飞林 尹香港 杜志刚[2] 陈莹[2] LI Fei-lin;YIN Xiang-gang;DU Zhi-gang;CHEN Ying(Guangxi Zhuang Autonomous Region Expressway Development Center,Nanning 530022,China;School of Transportation and Logistics Engineering,Wuhan University of Technology,Wuhan 430063,China)

机构地区：[1]广西壮族自治区高速公路发展中心,南宁市530022 [2]武汉理工大学交通与物流工程学院,武汉市430063

出　　处：《公路》2023年第1期135-140,共6页Highway

基　　金：国家自然科学基金项目,项目编号52072291。

摘　　要：为了改进高速公路上跨斜交桥梁在桥下产生的阴影效应的调控方法,从视觉参照系的角度对桥下视觉环境进行分析,建立基于驾驶人因的交通安全评价指标,并提出改进思路,即将桥下道路分为识别段、接近段、桥下段、驶离段,通过在路上设置醒目的限高架,路侧设置多频率、多尺寸的视线诱导系统,实现桥下弱视觉参照系增强和斜视觉参照系矫正,并根据道路设计速度、桥梁宽度及斜交角,确定阴影效应的调控方法。将改进后的交通工程设施应用到实际案例,结果表明高速公路桥下道路交通安全等级显著提升,证明了优化方法的有效性。In order to improve the shadow effect of the overpass bridge intersecting with the expressway, the visual environment under the bridge is analyzed from the perspective of the visual reference system, and the traffic safety evaluation index based on the driver’s human factor is established, and improvement ideas are proposed: the road under the bridge is divided into the identification section, approach section, beneath section, and the departure section. By setting up conspicuous limit elevated on the road and setting up multi-frequency and multi-size line of sight guidance system on the road side, the weak visual reference frame under the bridge can be enhanced, and the oblique visual reference frame can be corrected. According to the road design speed, bridge width and skew angle, the control method of shadow effect is determined. At the same time, the improved traffic safety facilities are applied to actual cases, and the results show that the road traffic safety level under the highway bridge is significantly improved, which proves the effectiveness of the optimization method.

关 键 词：斜交桥梁 阴影效应 视觉参照系 视觉舒适性 

分 类 号：U442.56[建筑科学—桥梁与隧道工程] U491.52[交通运输工程—道路与铁道工程]